Fecha de publicación: 12/01/2023 Fuente: WIPO Rice An apparatus, program, and method for scanning a subject ear, including at a handheld imaging apparatus, capturing a stream of images via an imaging lens and outputting the stream to a local processing apparatus, the images imaging a field of view including an ear of a subject. At the local processing apparatus: receiving the stream of images, and, on a repetitive basis per image: automatically detecting a position of each of a plurality of key surface features on the ear within the image to determine a relative 3D orientation of the imaging lens to the ear; based on the determined relative orientation and positions of the key surface features within the frame, determining a relative 3D position of the imaging lens to the ear; outputting, to the web server, the determined relative 3D orientation and the determined relative 3D position.